Yesterday I went to the offices of Porsche Canada in Mississauga and pleaded my case to them. These are the same guys that sent me to the "Explore the Core" test drive of the new 911s with the PDK transmission - at that time I guess I was special so I hope it hasn't worn off yet!. They will try to have a new wiring harness, specific to my VIN, fabricated for me at the factory. If so, this will be the best option. Not the cheapest but the best. If not, one of the other options will be needed to be made to work. BTW, I was unable to find anything on Ebay (I have never bought anything there in my life so perhaps I didn't search right) even hinting that somebody might have that harness.
This whole business of buying parts from dismantlers where you need to pay for it before you see it and, in the case of something like a wiring harness that might (no, make that probably) be no better than what you already have, is not appealing to me.
I will get it back on the road somehow.